Field Guide to the Dragonflies and Damselflies of Massachusetts
By Blair Nikula, Jennifer L. Loose, Matthew R. Burne Massachusetts Division of Fisheries & Wildlife, 2003 Cite: 8136
Wonderful photographic guide. For nearly every species, it has two large photographs, one of the male and one of the female. Lots of neat features, including a page of side-by-side comparisons of darners' lateral thoracic stripes.
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